46results about How to "Guaranteed creepage distance" patented technology

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctoris provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The present invention provides a highly cost-effective power supply transformer that is easily assembled and capable of ensuring a desired creeping distance between coils, while presenting no concern over insulation breakdown when a voltage is applied. The power supply transformer is provided with a case (10), a first coil (17), a lid body (20), a second coil (27), and a core (30). The case (10) describes the shape of a bottomed double-layered tube. The first coil (17) is accommodated between an inner tube (13) and an outer tube (12) of the case (10). The lid body (20) closes an upper opening of the case (10). The second coil (27) is disposed on a top surface of the lid body (20). The core (30) surrounds the case (10) and the second coil (27). The first coil (17) is made of a solid copper wire alone, the solid copper wire being wound in multiple layers. The lid body (20) is provided with a tubular inner wall section (23) and outer wall section (22) in a flat plate section (21). The second coil (27) is mounted on the flat plate section (21), and the inner wall section (23) and the outer wall section (22) surround the inner circumference and outer circumference of the second coil (27). A guide section (16) is formed on a bottom plate (11) of the case (10), the guide section (16) guiding an end section (17a) of the first coil (17) on the bottom plate side toward the outer tube side. A notch section (15) is formed on the outer tube (12), the notch section being intended to extract the end section (17a) to the exterior.

A conductive charging connector for an electric vehicle, comprising a vehicle end connection portion and a charger end connection portion, the vehicle end connection portion includes an insulating socket structure, the charger end connection portion includes an insulating plug structure, and the plug structure and the socket structure are matched , the plug includes a grounding pole and a power pole, the plug is also provided with a charging control pole, and the socket is provided with a jack to match the plug electrodes, and the heights of the grounding pole, the power pole and the charging control pole decrease in turn. In the present invention, the connecting part of the vehicle end and the connecting part of the charger are connected in a plug-in manner, and the connecting parts of the vehicle end and the connecting part of the charger are respectively provided with corresponding and matched conductors to cooperate. The charging connector can be plugged in directly without intermediate transition structure, and is easy to use. Each electrode adopts a structure with a certain height difference, which eliminates the plugging arc of the connector during engagement and separation, and ensures the safety of operators and vehicles , improve the service life of the connector.

The invention discloses a method for manufacturing an electric locomotive transformer oil pump wiring board. The method comprises the following steps of manufacturing parts, manufacturing a metal wiring board and a metal binding post, stamping an upper metal piece and a lower metal piece, manufacturing a pressure resisting ceramic body, assembling the wiring board, carrying out overall welding and completing manufacturing. The wiring board comprises the metal binding post, the upper metal piece, a 95aluminum oxide ceramic body, the lower metal piece and the metal wiring board. The thickness of the metal pieces is 0.8 mm, and the pressure resisting ceramic body comprises an upper cylindrical segment and a lower cylindrical segment which are integrated. The diameter of the metal binding post is equal to or slightly smaller than the diameter of the inner circle of the pressure resisting ceramic body. The electric locomotive transformer oil pump wiring board manufactured through the method is excellent in performance, easy to mount, easy to process, low in cost and good in insulation performance. The sealing performance and the oil pressure resisting performance of the wiring board are guaranteed through the metal and ceramic welding structure, a 0.8 MPa pressure leakage test is borne, leakage cannot occur, and the service life of an oil pump is prolonged.

The invention discloses an improved setting tool structure of a creep distance between coil covers. The setting tool comprises a cylindrical hollow mould body which is sleeved on stator outer side walls, wherein side walls at two ends of the mould body are provided with a plurality of slots respectively at circumference; the slots correspond to gaps among upper coil slots of stators; locating plates are inserted into the slots; and the thickness of the locating plates is equal to the creep distance. The setting tool also comprises a plurality of stretched claws which are in one-to-one correspondence with the locating plates; and the stretched claws are used for clamping or loosening the locating plates and controlling the locating plates to be inserted into or departed from the slots. Themould body which is sleeved on the stators and the locating plates which are inserted into the slots at two ends of the mould body are used for ensuring the creep distance. The improved setting tool structure is simple, is easy to realize and can ensure the creep distance between the coil covers accurately; and in addition, the stretched claws are used for clamping or loosening the locating plates as well as controlling the locating plates to be inserted into or departed from the slots, thus improving the efficiency.

The invention relates to an LED lamp (1) having a converter (6) and means connected to the converter of light-emitting diodes (8, 49) arranged on at least one printed circuit board (9) . The transducer is arranged in a multi-piece lockable housing (20) made of non-conductive material that completely surrounds the transducer.

The invention provides a capacitance compensation switch. A silicon controlled module is installed on a heat dissipation base and is arranged in a casing; the control circuit on a control circuit board is provided with a signal input end and a signal output end; the signal input end of the silicon controlled module is electrically connected with the signal output end of the control circuit; the heat dissipation base is provided with a heat dissipation base plate and two side plates and heat dissipation fins; the heat dissipation fins and the two side plates are arranged in parallel; the two ends of the heat dissipation base plate is provided with a protrusion part which is provided with an installation through hole; the side plate of the heat dissipation base plate is provided with an installation groove which is provided with installation screw holes; the lower part of the side plate of the casing is inserted into the installation groove and is fixedly connected onto the side plate through screws and installation screw holes; two connecting terminal rows are installed on the heat dissipation base plates; the silicon controlled module is arranged between the two connecting terminal rows; the controlled silicon module and the connecting terminal rows are electrically connected through an electric conductor; and the control circuit board is installed on the inner wall of the topplate of the casing. The invention has simple and stable structure, convenient installation, easy maintenance, little electromagnetic interference and high reliability.

The invention discloses a variable-pitch slip ring. The variable-pitch slip ring comprises a conductive ring and a conductive brush wire, wherein insulating rings are arranged on the two sides of the conductive ring; a groove is formed, surrounding the periphery, in the outer side of the conducive ring; a brush head matched with the groove is arranged at the end part of the conductive brush wire; and the brush head and the bottom of the groove are in line contact or surface contact. According to the variable-pitch slip ring, the width of the conductive ring is kept the same, and the conductive contact area is enlarged by changing the original point contact into line contact or surface contact, so that the contact resistance is reduced and the signal transmission quality is improved; a T-shaped slot structure has a good guide and limiting function, so that the conductive brush wire can be well positioned in the T-shaped slot in rotation without being in contact with the insulating rings; and therefore, an electrical creep distance is well ensured, and stable rotation contact between the brush wire and the conductive ring is ensured as well.

Provided is an environment-friendly gas cabinet isolating switch main shaft. The environment-friendly gas cabinet isolating switch main shaft comprises a base which is provided with three vertical convex columns, each convex column is hollow and forms a slideway, three notches are formed in the front side wall of the base, the notches are communicated with the slideways respectively, the base is provided with multiple rounded pieces which are coaxial with the base, at least four rounded pieces are arranged between every two adjacent convex columns, at least one rounded piece is arranged at each end of the base, front arc-shaped plates penetrating through the rounded pieces are arranged on the front side wall of the base, the top of each front arc-shaped plate is connected with and is flush with the top of the base, the bottom of each front arc-shaped plate is flush with the axis of the base, a rear arc-shaped plate penetrating through the rounded pieces is arranged on the rear side wall of the base, the top of the rear arc-shaped plate is flush with the axis of the base, the bottom of the rear arc-shaped plate is flush with and is connected with the bottom of the base, the base, the convex columns, the rounded pieces, the front arc-shaped plates and the rear arc-shaped plate are made into a whole by means of a high-strength non-metal material, and a cylindrical metal insert and a polygonal metal insert are embedded in the two ends of the base respectively. According to the environment-friendly gas cabinet isolating switch main shaft, few parts are used, assembling is convenient, the insulating property is good, and safe and stable work can be achieved without SF6 gas.

Provided are a stator capable of ensuring the creepage distance and being applicable to a compact motor, and a permanent magnet rotating electric machine. A motor stator (1) is provided with a yoke core (11) and a plurality of tooth cores (12) extending in the radial direction of the core (11). In the motor stator (1), a plurality of bobbins (13) attached to the tooth cores (12) and produced from an insulating material are provided, the bobbin (13) is configured from a body part (131) around which the exciting winding of the stator (1) is wound, and flange parts (132, 133) formed at both ends of the body part (131), and at an end surface in the circumferential direction of the inner diameter-side flange part (132, 133) of the flange parts (132, 133), a fitting section for fitting projecting and recessed sections of the flange parts (132, 133) of adjacent bobbins (13) to each other to thereby connect the plurality of bobbins (13) in the circumferential direction is provided.